144542613645 has 64 divisors (see below), whose sum is σ = 273248951040. Its totient is φ = 72243062784.

The previous prime is 144542613643. The next prime is 144542613661. The reversal of 144542613645 is 546316245441.

144542613645 is a `hidden beast` number, since 1 + 4 + 4 + 542 + 61 + 3 + 6 + 45 = 666.

It is not a de Polignac number, because 144542613645 - 2¹ = 144542613643 is a prime.

It is a super-3 number, since 3×144542613645³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 144542613645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144542613643) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 399582 + ... + 669888.

It is an arithmetic number, because the mean of its divisors is an integer number (4269514860).

Almost surely, 2^144542613645 is an apocalyptic number.

144542613645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

144542613645 is a deficient number, since it is larger than the sum of its proper divisors (128706337395).

144542613645 is a wasteful number, since it uses less digits than its factorization.

144542613645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270571 (or 270565 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 45.

The spelling of 144542613645 in words is "one hundred forty-four billion, five hundred forty-two million, six hundred thirteen thousand, six hundred forty-five".